[PATCH] Builtins and C++ and such (take 2)

[Benjamin Kosnik]

I'm for it. Please check it in. Sorry for the delay. This makes <cstring> 
and <cmath> consistent, which to me is an unremarked-upon side benefit. Yay!

Roger, as you've noticed, dealing with C++/C header issues is no picnic 
as it involves aspects of libstdc++/glibc/g++. Thanks for sticking with it.

As an aside, is there a way to test the performance win?

-benjamin